[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/mips/rb532/serial.c b/src/kernel/linux/v4.14/arch/mips/rb532/serial.c
new file mode 100644
index 0000000..7048254
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/mips/rb532/serial.c
@@ -0,0 +1,54 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Serial port initialisation.
+ *
+ * Copyright 2004 IDT Inc. (rischelp@idt.com)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/tty.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/irq.h>
+
+#include <asm/serial.h>
+#include <asm/mach-rc32434/rb.h>
+
+extern unsigned int idt_cpu_freq;
+
+static struct uart_port rb532_uart = {
+ .flags = UPF_BOOT_AUTOCONF,
+ .line = 0,
+ .irq = UART0_IRQ,
+ .iotype = UPIO_MEM,
+ .membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
+ .regshift = 2
+};
+
+int __init setup_serial_port(void)
+{
+ rb532_uart.uartclk = idt_cpu_freq;
+
+ return early_serial_setup(&rb532_uart);
+}
+arch_initcall(setup_serial_port);